I
know this isn't what you want to hear, but the problem you've described
can't be fixed with troubleshooting. Your TV will have to be repaired.
There is a part that has developed a defect and needs to be replaced. If
you're still in warranty, the TV will be repaired at no charge to you.
The warranty would likely be at least one year from the date of
purchase from the manufacturer. If you purchased an extended service
plan they will repair the TV at no charge as well.

If
the TV is no longer in warranty, it will likely cost a minimum of $150
parts and labor. This is assuming that you only need a power supply
module. If the problem includes one of the video circuit boards, the price of
repair could go much higher.

I hope I've provided you useful assistance and that this information
allows you to make an informed decision as to how to proceed from here.
Please be sure to vote on my response. I hope I've earned a good rating from you today.

Tell us some more! Your answer needs to include more details to help people.You can't post answers that contain an email address.Please enter a valid email address.The email address entered is already associated to an account.Login to postPlease use English characters only.

Older computers used it for power to the Floppy Drive. It's generally used now to provide power for a Card Reader.

Note that both types of connectors use the same power wires, and 2 ground wires.Yellow is 12 VoltsRed is 5 VoltsBlack is Ground

[ Also, in the ATX main power cable:Orange is 3.3 Volts, the Green wire is the Soft Power On wire. Abbreviated as PS_ON.

Power Supply plugged into power, the Soft Power On wire is briefly touched to ANY Ground wire. This is bypassing the Power On switch. If the computer (Power Supply) comes on, you have a bad Power On switch. IF the computer (Power Supply) does NOT come on, you have a bad Power Supply ]

(ALL Black wires are Ground wires. They all lead back to one central Ground point.ALL power wires lead back to one point in the power supply, for EACH power wire.

The 12 Volt power wires, (Yellow), all lead back to one point in the Power Supply.This is the 12 Volt power rail.

The 5 Volt power wires, (Red), all lead back to one point in the Power Supply.This is the 5 Volt power rail.

The 3.3 Volt power wires, (Orange), all lead back to one point in the Power Supply.This is the 3.3 Volt power rail ]

D) SATA power cable15-pin power cable for SATA harddrives, and SATA optical drives,

[ The smaller 7-pin SATA connector is the interface cable, or data cable.

IF, you have a SATA harddrive that has a provision for a SATA power cable, AND a 4-pin standard Peripheral power cable, ONLY use the SATA power cable.

It will burn out the harddrive if you use both. It may not do it right away, but eventually it will.I have had people state over the years, that they were using both power cables. Came back two months later to tell me their harddrives had burned out ]

Solution one: Make sure the electrical outlet works Unplug the power cord from the electrical outlet.Plug another appliance into the electrical outlet to make sure the outlet works.If the electrical outlet does not work , plug the product into another outlet that does work.If the electrical outlet works, but the product still does not turn on , continue to the next step.Solution two: Make sure the power supply is compatible with the HP product The term power supply refers to both the power module and the power cord. NOTE: To make sure that your product and power supply are compatible, HP suggests you use the original power supply shipped with your product. Example of a power module Example of a power cord NOTE: The power module might have a permanently attached power cord, or the power cord might detach from the power module.

Make sure the voltage and amperage specifications printed on the power supply match the voltage and amperage specifications printed on the HP product.Voltage and amperage specifications printed on the power supply Voltage and amperage requirements printed on the HP product

If the voltage and amperage specifications between the product and the power supply are compatible, make sure the connector on the power cord is the same shape and color as the connector on the HP product.WARNING: Do not force a power cord into an HP product that is incompatible with the HP product (different shape or size).

If the power cord is not compatible with the product, replace the power cord with a compatible cord. To buy a compatible cord, right-click the following link, How to Buy HP , and then click Open in New Window .If the power cord is compatible with the product, but the products still does not turn on, continue to the next step.Solution three: Reset the power module and test the power Step one: Reset the power module The power module has a safety feature inside that protects the product during a power surge. If you experienced a recent power surge, the power module might need to be reset. Use the following steps to reset the power module.Unplug the power supply from the rear of the product.Unplug the power cord from the electrical outlet, power strip, or surge protector.If the product uses a power module with a detachable power cord, disconnect the cord from the power module.Wait 15 seconds.Reconnect the power cord to the power module.Plug the power cord back into the electrical outlet. Do not use a power strip or surge protector.Check to see if the power module has an LED.If the power module does not have an LED, continue to the next step.If the power module has an LED, check to see if the LED lights up.If the LED does not light up, contact HP to replace the power module. To buy a compatible power module, right-click the following link, How to Buy HP , and then click Open in New Window .If the LED lights up, continue to the next step.Step two: Test the power on the All-in-One Follow these steps to test the power on the product.Reconnect the power supply to the rear of the product.Press and quickly release the Power button to start a Power On/Off cycle. Do not hold the button down.Figure 1: Press and quickly release the Power button

If you press and hold the Power button too long, the product might turn on and then off without restarting. If this happens, press and quickly release the Power button again.

If these steps resolved the issue , there is no need to continue troubleshooting.If the issue persists , see the next step.Solution four: Test the power with a compatible power cord from a different product If you have another available power cord that is compatible with your product, use the alternate cord to repeat the steps in Solution three: Reset the power module and test the power .If the product turns on with the alternate power cord, the original power cord caused the issue. Contact HP to replace the power cord. Right-click the following link, How to Buy HP , to buy a compatible power cord.If the product does not turn on with the alternate power cord, continue to the next step. Solution five: Service the HP product If you have completed all the preceding steps and are still experiencing a problem, service the product.

Power Steering Pump ReplacementRemoval Procedure1. Remove the accessory drivebelt.2. Raise and support the vehicle. Refer to Vehicle Lifting.3. Remove the tire and wheel assembly.4. Disconnect the power steering pressure hose from the power steering pump.5. Disconnect the power steering return hose from the power steering pump.6. Disconnect the harness connector (4) from the power steering pump (1).7. Remove the power steering mounting bolts from the power steering pump.8. Remove the power steering pump from the engine.9. Remove the power steering pump pulley from the power steering pump.10. Remove the power steering pump reservoir from the power steering pump.Installation Procedure1. Install the power steering pump reservoir to the power steering pump.2. Install the power steering pump pulley to the power steering pump.3. Position the power steering pump to the engine.Notice: Refer to Fastener Notice in Service Precautions.4. Install the power steering pump mounting bolts.Tighten the bolts to 25 Nm (18 ft. lbs.).5. Connect the power steering pressure hose to the power steering pump.6. Connect the power steering return hose to the power steering pump.7. Install the harness connector (1) to the power steering pump (4).8. Install the accessory drive belt.9. Fill the power steering system with fluid.10. Bleed the power steering system.11. Operate the power steering system and inspect for power steering system leaks.

Just about every power supply I've owned doesn't have a power switch. The power supply is turned on by one of the wires in the 24 pin connector. According to this it looks to be pin 16 and how to turn it on:

"Short this pin to GND to switch power supply ON, disconnect from GND to switch OFF."

1. Place a drain pan under the vehicle.2. Remove the accessory drive belt from the power steering pump pulley. Refer to Drive Belt Replacement in Engine Mechanical-3.8 L.3. Raise and support the vehicle. Refer to Vehicle Lifting.4. Remove the tire and wheel assembly. Refer to Tire and Wheel Removal and Installation in Wheels, Tires and Alignment.5. Remove the power steering pressure line from the power steering pump. Refer to Power Steering Pressure Hose Replacement (3.8 L) or Power Steering Pressure Hose Replacement (3.4 L)6. Remove the power steering return hose from the power steering pump. Refer to Power Steering Return Hose Replacement (3.4 L) or Power Steering Return Hose Replacement (3.8 L)7. Remove the power steering pump mounting bolts from the power steering pump.8. Remove the power steering pump assembly.9. Remove the power steering pump pulley from the power steering pump. Refer to Power Steering Pulley Replacement.10. Remove the power steering pump reservoir from the power steering pump. Refer to Power Steering Reservoir Replacement - Off Vehicle (CB Series).

Installation Procedure

1. Install the power steering pump reservoir to the power steering pump. Refer to Power Steering Reservoir Replacement - Off Vehicle (CB Series).2. Install the power steering pump pulley to the power steering pump. Refer to Power Steering Pulley Replacement.3. Position the power steering pump assembly to the engine. Notice: Refer to Fastener Notice in Service Precautions.4. Install the power steering pump mounting bolts. Tighten the power steering pump mounting bolts to 34 Nm (25 ft. lbs.). 5. Install the power steering pressure line to the power steering pump. Refer to Power Steering Pressure Hose Replacement (3.8 L) or Power Steering Pressure Hose Replacement (3.4 L).6. Install the power steering return hose to the power steering pump. Refer to Power Steering Return Hose Replacement (3.4 L) or Power Steering Return Hose Replacement (3.8 L)7. Install the tire and wheel assembly. Refer to Tire and Wheel Removal and Installation in Wheels, Tires and Alignment.8. Lower the vehicle.9. Install the accessory drive belt. Refer to Drive Belt Replacement in Engine Mechanical-3.8 L10. Fill the power steering system. Refer to Refilling the Power Steering System.11. Bleed the power steering system. Refer to Bleeding the Power Steering System.12. Inspect the power steering system for leaks. Refer to Steering and Suspension Leaks.13. Remove the drain pan from under the vehicle.
You may want to take it to the dealer or other repair shop. It is very difficult and will consume a major portion of your day.

Reset the power module and test the power
Step one: Reset the power moduleThe power module has a safety feature inside that protects the product during a power surge. If you experienced a recent power surge, the power module might need to be reset. Use the following steps to reset the power module.

Unplug the power supply from the rear of the product.

Unplug the power cord from the electrical outlet, power strip, or surge protector.

If the product uses a power module with a detachable power cord, disconnect the cord from the power module.

Wait 15 seconds.

Reconnect the power cord to the power module.

Plug the power cord back into the electrical outlet. Do not use a power strip or surge protector.

Check to see if the power module has an LED.

If the power module does not have an LED, continue to the next step.

If the power module has an LED, check to see if the LED lights up.

If the LED does not light up, contact HP to replace the power module. To buy a compatible power module, right-click the following link, How to Buy HP , and then click Open in New Window .

If the LED lights up, continue to the next step.

Step two: Test the power on the All-in-OneFollow these steps to test the power on the product.

Reconnect the power supply to the rear of the product.

Press and quickly release the Power button ( ) to start a Power On/Off cycle. Do not hold the button down.
Figure 1: Press and quickly release the Power button
If you press and hold the Power button too long, the product might turn on and then off without restarting. If this happens, press and quickly release the Power button ( ) again.

If these steps resolved the issue , there is no need to continue troubleshooting.

If the issue persists , see the next step.

Solution four: Test the power with a compatible power cord from a different product
If you have another available power cord that is compatible with your product, use the alternate cord to repeat the steps in Solution three: Reset the power module and test the power .

If the product turns on with the alternate power cord, the original power cord caused the issue. Contact HP to replace the power cord. Right-click the following link, How to Buy HP , to buy a compatible power cord.

If the product does not turn on with the alternate power cord, continue to the next step.

Problems associated with low power steering fluid…Hard Vehicle SteeringA low power steering fluid level can often times cause a vehicle's steering to become hard and labored. Adequate amounts of power steering fluid are necessary to enable a vehicle's power steering system to function and operate at optimum levels. A lack of power steering fluid in a vehicle's power steering system reduces the amount of hydraulic fluid pressure necessary to efficiently operating the various parts of the entire power steering system. Power steering fluid supplies the fluid force needed to operate the power steering gears and to enable power steering gearbox operation. Low power steering fluid levels reduce this hydraulic pressure, which commonly results in hard vehicle steering.Pump NoiseIt is very common for a low power steering fluid level to cause significant power steering pump noise. An adequate amount of power steering fluid is required to ensure the proper function and longevity of a power steering pump unit, which is a belt-driven pump responsible for housing and circulating power steering pump fluid. A low level of power steering fluid results in increased power steering pump friction, heat, and wear, all of which can significantly reduce the operational life of the power steering pump while at the same time cause excessive power steering pump noise. Fluid Boiling
Many times a low power steering fluid level can result in excessive heating of power steering fluid, a condition that can seriously degrade the fluid and cause it to boil. A low power steering fluid level results in less available fluid to both lubricate and cool a power steering pump unit. A lack of power steering pump lubrication and cooling leads to excessive heat being generated within the power steering pump unit itself, a condition that translates into the available level of power steering fluid becoming super-heated and degraded. When this happens it is common for the power steering fluid to boil and lose all of its lubricating and heat-reducing capabilities.

Gearbox Wear
The power steering gearbox is a set of gears within a vehicle's power steering system designed to facilitate movement of a vehicle's front wheels. The power steering gearbox is connected to the power steering pump by hydraulic fluid lines that deliver a constant supply of power steering fluid to the power steering gearbox. A low power steering fluid level, especially a chronic and severe low power steering fluid level, can lead to increased friction and wear within the power steering gearbox assembly, a condition that can significantly shorten the operational life of the power steering gearbox and negatively affect its operation

Power Steering Pump: Service and RepairPower Steering Pump ReplacementNOTE: The content of this article / image reflects the changes called out by TSB: 05-02-32-004.

Power Steering Pump ReplacementRemoval Procedure1. Remove the accessory drive belt.2. Raise and support the vehicle. Refer to Vehicle Lifting.3. Remove the tire and wheel assembly.4. Disconnect the power steering pressure hose from the power steering pump.5. Disconnect the power steering return hose from the power steering pump.6. Disconnect the harness connector (4) from the power steering pump (1).7. Remove the power steering mounting bolts from the power steering pump.8. Remove the power steering pump from the engine.9. Remove the power steering pump pulley from the power steering pump.10. Remove the power steering pump reservoir from the power steering pump.Installation Procedure1. Install the power steering pump reservoir to the power steering pump.2. Install the power steering pump pulley to the power steering pump.3. Position the power steering pump to the engine.Notice: Refer to Fastener Notice in Service Precautions.4. Install the power steering pump mounting bolts.Tighten the bolts to 25 Nm (18 ft. lbs.).5. Connect the power steering pressure hose to the power steering pump.6. Connect the power steering return hose to the power steering pump.7. Install the harness connector (1) to the power steering pump (4).8. Install the accessory drive belt.9. Fill the power steering system with fluid.10. Bleed the power steering system.11. Operate the power steering system and inspect for power steering system leaks.

The product uses a power cord, if the power supply is a power cord with electrical connections at each end.
Figure 1: Power cordThe product uses a power module, if the power supply is a power cord connected to a power module.
Figure 2: Power module

If the product uses a power module (adapter), go to Step two: Check if power is supplied from the power module.

If the product uses only a power cord, go to Step three: Check if power is supplied from the power cord.If the product uses a power module (adapter), follow these steps to make sure that power is properly supplied to the product.
Figure 3: Power module

Check
the power module part number against the part number listed in the
User’s Guide to make sure that the proper power module is being used.

If the power module has a permanently attached power cord, do the following.

Disconnect the power cord from the wall outlet.

Disconnect the power cord from the product.

Wait 30 seconds.

Reconnect the power cord to the product and the wall outlet.

If
the power module has a detachable power cord, disconnect the power cord
from the power module and reconnect the power cord to the power module.

If the power cord was plugged into a surge protector or power strip, plug the power cord directly into a wall outlet instead.

If
the product does not turn on, or the power light built into the power
cord does not glow, plug the product into a wall outlet in another room.

If
the product or power light turns on when connected to a wall outlet in
another room, there is an issue with the power supply in the previous
room.

If
there is still no power to the product, then the power module, power
cord, or product might be defective. Proceed to the next instruction.

Connect the power module or power cord to another HP Deskjet or Photosmart product to see if the power module is functioning.

If the power light does not glow, the power module might be defective. Replace the power module and the power cord.

If
the power module or power cord works on the other product, the product
facing the issue might be defective. Proceed to Step four: Service the
product.

If the product uses only a power cord, follow these steps to make sure that power is properly supplied to the product.
Figure 4: Power cord

Inspect the power cord for visible damage.

If the power cord is damaged, replace the power cord.

If the power cord is not damaged, continue with the next instruction.

Disconnect the power cord from the wall outlet.

Disconnect the power cord from the product.

Wait 30 seconds.

Reconnect the power cord to the product.

Reconnect the power cord to the wall outlet.

If the power cord was plugged into a surge protector or power strip, plug the power cord directly into a wall outlet instead.

If the product still does not turn on, plug the product into a wall outlet in another room.

If the product turns on when connected to a wall outlet in another
room, there is an issue with the power supply in the previous room.

If there is no power to the product, then the power cord or the product might be defective. Proceed to the next instruction.

Connect the power cord on another HP Deskjet or Photosmart product to see if the power cord is functioning.

If the power cord does not work on the other product, the power cord is defective. Replace the power cord.

If the power cord works on the other product, the product facing the
issue might be defective. Proceed to Step four: Service the product.

Step four: Service the Product
If you have completed all the steps listed above and are still experiencing a problem, service the product by calling hp at 1800-474-6836